B43L 7/04

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More Results

Patent/Pub #TitleFiling DateIssue/Publication DatePatent Owner
5647135 Drafting instrument with electronically controllable scaleAug 03, 95Jul 15, 97Not available
5174036 Multi-functional rulerMay 07, 91Dec 29, 92Not available
5172482 Drawing instrumentJan 29, 92Dec 22, 92Align Incorporated
5152069 Parallel ruleDec 13, 91Oct 06, 92Not available
5131157 Drafting deviceJun 05, 91Jul 21, 92Not available